My question is, on the run / kill switch instead of one wire in and one wire out as I expected, there are four wires and four points where the wires are soldered.

The two top terminals are linked at the connection pin where it goes into the electrical connector block and so in effect have continuity.

The third wire is marked "N" and has continuity with the top terminals with the kill switch live, but not when ignition is killed

The fourth wire is marked "ignition lock" and the wiring instructions state that this wire goes to the "de-energised terminal with ignition switched on," and has continuity with the top terminals with the kill switch live, but not when ignition is killed

What I intend to do is cut the wire that goes to the "de-energised terminal with ign on" and just use the third wire to complete the ignition circuit on the kill switch.

But can anybody tell me what a "de-energised terminal with ignition switched on" is please. Is it for bikes with ECUs ??

OK, well some bikes still have a magneto type ignition, which requires that something be shorted out to stop it. That would be the only way to do it. So the Domino switch is trying to suit both cases by the sounds of it.

Whatever is the modern equivalent of a battery-less ignition. I do know the ignition switch of such bikes needs a closed contact in the 'off' position to stop it, and, prevent it being started and ridden away by a tealeaf of course.

I rather doubt a kill switch would be much of a theft prevention measure.......

When I first had a Norton single in the early 1970s I used to leave it anywhere with the ignition on full advance thinking (a) it wasn't worth anybody's time to nick it and (b) they'd break their ankle trying to start it.

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